TY  - BOOK
AU  - Crossley,John N.
TI  - What is mathematical logic?
AV  - QA9 .W47 1972
U1  - 511.3 20
PY  - 1972///
CY  - London
PB  - Oxford University Press
KW  - Logic, Symbolic and mathematical
KW  - Local
N1  - Includes bibliographical references (p. [79]) and index
ER  -